425 



Phytomeira [Plusia) nu, on beans, pastures, etc. ; P. hiloba, on lucerne, 

 pastures, etc. ; Lycophotia margaritosa {Peridroma saucia), on potatoes, 

 pastures, etc. ; Agrotis ypsilon, on potatoes, beans (pulse), chick-peas, 

 etc. ; Heliothis [Chloridea) obsoleta, on maize, chick-peas, tomatos, etc. ; 

 Copitarsia consulta, on lucerne, pastures, tobacco, etc. ; Feltia annexa, 

 on vines, potatoes, beans, etc., and F. suhgothica, on maize, beans and 

 various grasses and pasture plants. The most important natural 

 enemy of these cutworms is the Carabid, Calosoma vagans. The 

 remedial measures include autumn ploughing, the construction of 

 ditches to prevent migration, rolling the ground while the insects 

 are feeding above the surface, and flooding. The usual arsenical 

 mixtures and poison baits are also recommended. 



Camacho (C). La Cochinilla Negra del Olivo, Saissetia {Lecanium) 

 oleae, Bern. — Scrv. Policia Sanit. Vej., Santiago de Chile, 1917, 

 2 pp., 1 plate. [Received 4th July 1921 .] 

 Saissetia oleae, Bern, (black citrus scale) occurs abundantly on olive 

 and citrus trees in Chile, and also on almonds, plum, magnolia, 

 camellia, rose and other fruit, forest and ornamental trees, as well as on 

 garden plants. All stages of the scale may be found together, and in 

 the northern and central parts of the country eggs and larvae are 

 found practically all the year round, though in spring and early summer 

 they are at their maximum numbers. A description of the stages and 

 the life-history are given. Paraffin emulsion and calcium pol3^sulphide 

 have both yielded good results against the scale in Chile ; the prepara- 

 tion of these is described. 



PicARD (F.). Le ddterminisme de la Ponte chez un Hym^noptere 

 t6r6brant, le Pimpla instigator, L. — C. R. Hehdom. Acad. Sci., 

 Paris, clxxii, pt. 25, 20th^June 1921, pp. 1617-1619. 



The stimulus to oviposition and behaviour of the adults of Pimpla 

 instigator, L., are discussed. 



Tanquary (M. C.) & Hays (M. E.). Commercial-Sulphur Products 



as Dormant Sprays for Control of the San Jos^ Scale. — Texas 



Agric. Expt. Sta., College Station, Circ. 24, November 1920, 



7 pp., 2 figs. [Received 6th July 1921 .] 



An account is given of experiments in the control of San Jose scale 



[Aspidiotus perniciosus] with certain commercial preparations of 



lime-sulphur in the dry form that are being offered in view of the 



difficulties of preparing the home-made mixture and the expense and 



trouble of handling the stock solution. The mixtures used were 



Niagara soluble sulphur, Sherwin-Williams dry lime-sulphur, and 



Grasselli liquid lime-sulphur, and all were very effective under the 



conditions of the experiment. Further tests should be made before 



final recommendations can be made, but the possibility of success 



with such preparations against San Jos6 scale is clearly demonstrated. 



Tanquary (M. C.) & Reinhard (H. J.). Dusting Cotton for the 



Control of the BoW-v/eevH.— Texas Agric. Expt. Sta., College 



Station, Circ. 29, April 1921, 9 pp., 1 fig. 



The dusting method for the control of the cotton boll-weevil 



[Anthonomus grandis], as developed by Coad [i^. /1..F., A, viii, 457], 



has proved successful under Texas conditions. A list of precautions 



intended as a guide for those proposing to adopt this method is given. 



